THE STRAYED MOON

Just delivered! Will you help me assembling it?

Your massive star is gone in a supernova explosion, replaced by something much more intriguing... and dark.

The end of a massive star's life is truly a blast.

Blue, big and massive? Small, red and low-mass? Something in-between? Pick your own star, and see how it changes with time.

More tips for a happy family life from our star expert, Sol.

Taking care of a system of planets, asteroids and comets can feel overwhelming sometimes... but it also has its rewards. Here some tips.